Difference between revisions of "Global variables"
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A global [[Variable]] is a variabe that is declared in the main section of a program or the interface part of a unit. Globals declared in a program cannot be accessed from within a unit. Globals declared in a unit can be accessed from within a program or another unit. | A global [[Variable]] is a variabe that is declared in the main section of a program or the interface part of a unit. Globals declared in a program cannot be accessed from within a unit. Globals declared in a unit can be accessed from within a program or another unit. | ||
Revision as of 20:27, 25 May 2018
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A global Variable is a variabe that is declared in the main section of a program or the interface part of a unit. Globals declared in a program cannot be accessed from within a unit. Globals declared in a unit can be accessed from within a program or another unit.
program GlobalVariables; var g: integer; begin end.
g is a global variable.
External variable
External variable is a global variable has been declared in unit interface section.
